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Mathematical or scientific analysis of a process or operation, used in making decisions.
(Economics) the analysis of problems in business and industry involving the construction of models and the application of linear programming, critical path analysis, and other quantitative techniques. Also: operational research
the analysis, usu. involving mathematical treatment, of a process, problem, or operation to determine its purpose and effectiveness and to gain maximum efficiency.
The analytical study of military problems undertaken to provide responsible commanders and staff agencies with a scientific basis for decision on action to improve military operations. Also called operational research; operations analysis.